ICS 77.140.50ISBN 974-9904-74-5 THAI INDUSTRIAL STANDARD.22232548 ELECTROLYTIC ZINCCOATED COLDROLLED STEEL COIL, STRIP ANDSHEET 6 10400 0 2202 3300 122 106 24 2548.22232548(2)21 () (3) 15 .. 2511 JIS G 3313 : 1998 Electrolytic zinccoated steel sheets and coilsJISG31351986 Cold rolled high strength steel sheets with improved formability forautomobile structural usesJISZ22011998 Test pieces for tensile test for metallic materialsJISZ22411998 Method of tensile test for metallic materials.244 12520 1 32520 3 B C.20122543 .21402546 (5) 3383 ( .. 2548 ) .. 2511 15 .. 2511 .2223-2548 6 .. 2548 1.22232548 1. 1.1 2. 2.1 2.2 2.3 2.4 2.5 1 2.6 3. 3.1 3 3.1.1 3.1.2 3.1.3 3.2 1.22232548 21 ( 3.2) 1. SECC 2. SECE N SECEN mm SECC 0.25 3.2(commercial quality)SPCCSECD 0.3 3.2(drawing quality)SPCDSECE 0.3 3.2 (deep drawing quality)SPCESEFC340 0.6 2.3 SPFC340SEFC370 (spinning quality) SPFC370SEFC390 0.6 2.3 SPFC390SEFC440 (forming quality) SPFC440SEFC490 SPFC490SEFC540 SPFC540SEFC590 SPFC590SEFC490Y 0.6 1.6 SPFC490YSEFC540Y (lower yeild ratio type) SPFC540YSEFC590Y SPFC590YSEFC780Y 0.8 1.4 SPFC780YSEFC980Y SPFC980YSEFC340H 0.6 1.6 (bakehardening type)SPFC340H3.222325483.3 22 ( 3.3)4.4.1 7.85 1 1 4.2 4.2.1 33 ( 4.2.1) A S 8 1 8 4 1 4 2 1 2 1 3.2 3.2 3.2 600 600 .22232548 44.2.2 4.2.2.1 4 5 9.1.14 ( 4.2.2.1) 600 1 000 1 250 1 600 600 1 000 1 250 1 600 0.25 0.40 0.04 0.04 0.04 - -0.40 0.60 0.05 0.05 0.05 0.06 -0.60 0.80 0.06 0.06 0.06 0.06 0.070.80 1.00 0.06 0.06 0.07 0.08 0.091.00 1.25 0.07 0.07 0.08 0.09 0.111.25 1.60 0.08 0.09 0.10 0.11 0.131.60 2.00 0.10 0.11 0.12 0.13 0.152.00 2.50 0.12 0.13 0.14 0.15 0.172.50 3.15 0.14 0.15 0.16 0.17 0.203.15 3.20 0.16 0.17 0.19 0.20 -5.222325485 ( 4.2.2.1) 4.2.2.2 6 7 9.1.26 ( 4.2.2.2) (stretcherleveled steel sheet)+7 0+100 160 250 400 160 250 400 6000.40 0.60 0.035 0.040 0.040 0.0400.60 0.80 0.040 0.045 0.045 0.0450.80 1.00 0.04 0.05 0.05 0.051.00 1.25 0.05 0.05 0.05 0.061.25 1.60 0.05 0.06 0.06 0.061.60 2.00 0.06 0.07 0.08 0.082.00 2.50 0.07 0.08 0.08 0.092.50 3.15 0.08 0.09 0.09 0.103.15 3.20 0.09 0.10 0.10 0.11 600 0.5600 1 2501 250 .22232548 6 600 600 1 2501 250 2 0002 000 4 0004 000 6 000+200+150+1007 ( 4.2.2.2) 4.2.2.3 ( ) 8 9.1.38 ( 4.2.2.3) 5.5.1 .2012 .2140+30+4 07.222325486. 6.1 6.1.1 9 10 9.29 ( 6.1.1) 40 (1 ) (1) () (1 ) ES - -(2)EB 3 2.5 -E8 10 8.5 8E16 20 17 16E24 30 25.5 24E32 40 34 32E40 50 42.5 40(1) (2) 50 .22232548 810 ( 6.1.1) 6.1.2 11 (1) (2) 11 ( 6.1.2) 11 6.1.3 12 () EB 0E8 0.001E16 0.003E24 0.004E32 0.005E40 0.006 C P M9.2223254812 ( 6.1.3)NONOxrust6.2 6.2.1 13 JIS Z 2241 16.2.2 (bake hardening amount) 13 JIS G 3135 1 O X.22232548 1013 ( 6.2.1 6.2.2) 1. SECC 2. SECC SECD SECE 0.603. SECCSECDSECE 30 4. SECE 6 5. BH= FSA FWHAO % mm 0.30 0.60 1.00 1.60 2.30 2.50 N/mm2N/mm20.60 1.00 1.60 2.30 2.50 N/mm2SECC - (270) 34 (36) (37) (38) (38) (39) - SECD - 270 36 38 39 40 40 41 - SECE - 270 38 40 41 42 42 43 -SEFC340 175 340 - 34 35 35 - - - SEFC370 205 370 - 32 33 33 - - - SEFC390 235 390 - 30 31 31 - - -SEFC440 265 440 - 26 27 27 - - -SEFC490 295 490 - 23 24 24 - - -SEFC540 325 540 - 20 21 21 - - -SEFC590 355 590 - 17 18 18 - - -SEFC490Y 225 490 - 24 25 25 - - -SEFC540Y 245 540 - 21 22 22 - - -SEFC590Y 265 590 - 18 19 19 - - -SEFC780Y 365 780 - 13 14 14 - - -SEFC980Y 490 980 - 6 7 7 - - -SEFC340H 185 340 - 34 35 35 - - 3011.22232548 BH FSA 3FWH 2 2AO 3 20 30 B 30 1 ( 6.2.1 6.2.2)WLP RT25 50 60 () 15 () .22232548 12 2 3 (13 ) (13 )6.2.3 14 .244 1 3 14 ( 6.2.3)6.2.4 ( SECC) 9.3 7 HRB HV8 50 71 95 1304 65 80 115 1502 74 89 135 1851 85 170 13.22232548 2 000 2 000 30 60 8 8 2 00060 600 4 4 2 000600 2 2 2 0006.3 ( ) 15 9.415 ( 6.3) 6.4 ( ) 16 9.516 ( 6.4) 6.5 ( ) 17 9.6 3 000 1 200 2 1 200 3 3 000 3.22232548 1417 ( 6.5) 7. 7.1 (1) ( ) SECCP O E16/E32(2)x x x x ( )(3) (4) (5) (6) 1 200 15 0.70 1 200 1 500 18 1 500 22 1 200 120.70 1.20 1 200 1 500 15 1 500 19 1 200 10 1.20 1 200 1 500 12 1 500 1715.222325488.8.1 .9.9.1 9.1.1 9.1.1.1 (1) 0.005 (2) 0.001 9.1.1.2 (1) 25 30 15 30 3 (2) 25 3 15 3 9.1.1.3 9.1.2 9.1.2.1 0.5 9.1.2.2 100 2 1 000 2 9.1.3 ( ) 1 100 2 .22232548 169.2 9.2.1 9.2.1.1 ZnK9.2.1.2 40 48 33 37 3 4 4 ( 9.2.1.2)9.2.1.3 9.2.1.4 3 9.2.2 9.2.2.1 4 9.2.2.2 (1+1) 1 1 17.222325489.2.2.3 50 x 150 3 5 5 ( 9.2.2.3)9.2.2.4 (1) (2) (3) (1+1) (4) 9.2.2.5 ( )(/) ()9.2.2.6 3 =.22232548 189.3 70 x 150 (rollingdirection) 180 18 19 6 6 ( 9.3) 18 ( 9.3) 1. SECC842 2. SECC 1 SECC A SECDSECE S SECC 8 4 1.5 2 1 -19.22232548 19 ( 9.3)9.4 9.4.1 0.5 (a) 2 000 7 2 000 89.4.2 9.4.172000( 9.4.1) SEFC340 SEFC370 SEFC390 SEFC440 SEFC490 SEFC540 1.5 SEFC590 SEFC490Y SEFC540Y 1.5 SEFC590Y SEFC780Y 3 SEFC980Y 4 SEFC340H .22232548 2082000( 9.4.1)9.5 0.5 (A) 9 9 ( 9.5)9.6 0.5 0.5 1021.22232548 10 ( 9.6).22232548 22. ( 8.1).1 .2 .2.1 .2.1.1 .1.2.1.2 4.2 6.3 .1 .1 ( .2.1) 2 500 .2.2 .2.2.1 .2.2.2.2 4.2 6.3 6.4 6.5 .2 10 2 0 10 8 123.22232548.2 ( .2.2).2.3 .2.3.1 600 5 50 50 50 .2.3.2 5 50 50 50 .2.3.3 6.1.1 .2.4 .2.4.1 3 .2.4.2 6.2.16.2.26.2.36.2.4 .3 .2.1.2.2.2.2.2.3.3.2.4.2 500 2 0 500 8 1